SiCal vs MAJA
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SiCal
This private calendar app utilizes a decentralized network for secure storage and management of your schedule. It allows for event creation, organization across multiple calendars, and import of existing files, all without requiring a traditional account. Your data is secured by a recovery phrase for easy restoration and control.
- Decentralized calendar storage
- Event creation and organization
- Multiple calendar management
- ICS file import
- Event reminders and alerts
- Restore access with recovery phrase
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SiCal is a private calendar app built on the decentralized Sia network. Create, organize, and manage your schedule without relying on a traditional central server or account-based calendar platform. With SiCal, you can create and edit events, manage multiple calendars, import calendar files like ICS, and stay on top of your schedule with event reminders and alerts. Your calendar data is tied to your recovery phrase, giving you a portable way to restore access and keep control of your information. Key features: -Decentralized calendar storage powered by Sia -Create, edit, and organize events across calendars -Import existing calendar files including ICS -Event reminders and alerts -Sync support to keep your calendar up to date -Restore access with your recovery phrase -No traditional account required -SiCal is designed for people who want a calendar that is practical, mobile-friendly, and more aligned with user ownership and privacy. This app was funded by a grant from the Sia Foundation.
MAJA
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Important dates, handled before you forget. maja is a free schedule management app that helps you manage important dates in one place, such as rent payments, contract expiration dates, car insurance renewals, passport expiration dates, subscription payments, warranty periods, visas, and more. Life has many dates you should not miss. But checking every contract, insurance renewal, subscription, and expiration date every day is not easy. With maja, you can record important dates once and let the app help you stay prepared. maja automatically calculates the remaining days until each due date, renewal date, payment date, or expiration date. With D-Day calculation, you can quickly see how many days are left and set reminder notifications for the date and time you choose. Stop trying to remember every important date by yourself. maja reminds you before it matters. ■ Manage important schedules Organize important dates for contracts, insurance, vehicles, subscriptions, warranties, visas, passports, and more. Manage rent payment dates, lease expiration dates, car insurance renewal dates, vehicle inspection dates, passport expiration dates, visa expiration dates, subscription payment dates, and product warranty periods in one place. ■ D-Day calculation maja automatically calculates how many days are left until each important date. Check the remaining days until expiration dates, renewal dates, payment dates, and other deadlines at a glance. ■ Reminder notifications Set reminder notifications for your preferred date and time. Prepare before a contract expires, check your insurance before renewal, review subscriptions before the next payment, and avoid missing important deadlines. ■ Phone calendar integration maja works with your phone’s default calendar. Manage maja schedules together with your existing calendar events, without changing the way you already use your calendar. ■ Subscription management Track monthly or yearly subscription payments. Manage streaming services, music apps, cloud storage, app subscriptions, memberships, and other recurring payments. maja helps you remember upcoming subscription dates before they arrive. ■ AI assistant maja’s AI assistant helps organize your schedules based on remaining time and importance. It can also recommend related items you may want to manage together. For example, when you add car insurance, maja can help you remember vehicle inspection dates. When you add a passport, maja can help you think about visas and travel insurance. ■ Repeating schedules Create monthly, yearly, and custom repeating schedules. Use maja for regular payment dates, annual renewals, repeating checks, contract reviews, warranty periods, and more. ■ Safe and easy to start Start with Google login, Apple login, or guest mode. Protect your important schedule information with Face ID or fingerprint lock. ■ Completely free maja is completely free to use. Use maja as your free schedule management app for D-Day calculation, expiration date alerts, reminder notifications, calendar integration, subscription management, and AI assistant features. ■ Recommended for people who want to: Manage contract expiration dates Remember insurance renewal dates Track passport, visa, and warranty periods Organize subscription payment dates Use a schedule management app with phone calendar integration Check important dates with D-Day calculation Receive reminder notifications and expiration date alerts Let an AI assistant help organize important schedules You have many important dates to remember, but you do not have to remember them all by yourself. Record them in maja, and maja will help you stay prepared before important dates arrive. Important schedule management, D-Day calculation, reminder notifications, calendar integration, subscription management, AI assistant, and expiration date alerts. Let maja handle the dates you should not miss. Privacy Policy : https://luna-company.co.kr/maja/privacy.html
Screenshots
Verdict
The clearest difference is ads: SiCal at none against MAJA's shown. SiCal also leads on update cadence (every 9 days vs every 4 weeks) and iOS requirement (13.0 vs 15.5). On price, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
SiCal ships an update every 9 days, MAJA every 4 weeks. The most recent releases landed on October 25, 2026 and October 20, 2026 respectively.
| Parameter | SiCal | MAJA |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 9 days — better | Every 4 weeks |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.5 |
| Further details — not scored | ||
| Size | 33 MB | 71 MB |
| Age rating | 4+ | 4+ |
| Developer | Mitchell May | HANG HEO |
In-app purchases
SiCal
No in-app purchases
MAJA
No in-app purchases









